A manual lift column

Abstract

This utility model relates to the field of road barrier technology and discloses a manually operated rising bollard, including a base, an outer column assembly, an inner column assembly, and a manual lifting device. Both the outer column assembly and the manual lifting device are fixed to the base. The outer column assembly includes an outer column tube with a top opening, and the inner column assembly includes an inner column tube with a bottom opening. The inner column tube is movably embedded within the outer column tube. The manual lifting device is located within the inner column tube and is used to push the inner column tube to move up and down along the length of the outer column tube. A sleeve is installed on the inner column tube to fit against the inner wall of the outer column tube. An anti-rotation post is provided between the abutment ring of the outer column tube and the base. The sleeve has a notch groove that mates with the anti-rotation post. The engagement between the notch groove and the anti-rotation post achieves the lifting and anti-rotation of the inner column tube. Compared to existing welding assembly processes, this utility model only requires fitting the sleeve onto the outer wall of the inner column tube and fixing it to the receiving flange at the bottom of the inner column tube, making assembly more convenient and efficient.

Description

Technical Field

[0001] This utility model relates to the field of road barrier technology, and in particular to a manually operated rising bollard. Background Technology

[0002] Rising bollards, also known as rising bollards or automatic rising bollards, are pre-installed in specific locations and have a lifting function. Their biggest advantage is that they have a strong blocking ability when raised, but do not occupy any ground space when lowered. They are used in various entrance and exit passages with security requirements.

[0003] A common type of bollard structure, as described in Chinese invention patent publication CN108396680A, includes a base, an outer column assembly, an inner column assembly, and a lifting device. Both the outer column assembly and the lifting device are fixed to the base. The outer column assembly includes an outer column tube with a top opening, which is buried underground. The inner column assembly includes an inner column tube with a bottom opening, which is movably embedded within the outer column tube. The lifting device is located within the inner column tube and includes a push rod. A connecting plate is located at the top of the inner column tube, and a connecting hole matching the push rod is opened in the middle of the connecting plate. The push rod is fixed within the connecting hole and is used to push the inner column tube to move along the length of the outer column tube. A drain outlet is located at the bottom of the outer column tube. The bollard is installed in an installation groove below ground level. A water collection trough, lower than the installation groove, is located near the installation groove. The drain outlet guides water from the outer column assembly and the inner column assembly into the water collection trough.

[0004] One problem with existing lifting bollards is that they require at least two guide rings at the bottom of the inner column to ensure lifting stability, at least two guide rods to connect the base and the stop ring, and at least two guide holes corresponding to the guide rods on the guide rings. During manufacturing, welding is required between the guide rings and the inner column, and between the guide rods and the outer column, making the process complex and resulting in low production efficiency; an average of only about five lifting bollards can be assembled per person. Furthermore, in some applications, the lifting frequency is very low, and using hydraulic manual lifting devices for all applications would lead to high application costs. Utility Model Content

[0005] The purpose of this utility model is to provide a manual lifting column that is easier to assemble and does not require an automatic lifting device, and to provide at least a beneficial option or create conditions for solving one or more technical problems existing in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution.

[0007] A manually operated lifting column includes a base, an outer column assembly, an inner column assembly, and a manual lifting device. Both the outer column assembly and the manual lifting device are fixed to the base. The outer column assembly includes an outer column tube with a top opening, and the inner column assembly includes an inner column tube with a bottom opening. The inner column tube is movably embedded within the outer column tube. The manual lifting device is disposed within the inner column tube and is used to push the inner column tube to move up and down along the length of the outer column tube. A sleeve is installed on the inner column tube, conforming to the inner wall of the outer column tube, to ensure stable lifting of the inner column tube. An anti-rotation post is provided between the abutment ring of the outer column tube and the base. A notch groove is provided on the sleeve to cooperate with the anti-rotation post, and the cooperation between the notch groove and the anti-rotation post achieves anti-rotation during lifting of the inner column tube.

[0008] More preferably, the manual lifting device includes a screw and a stud assembled together, the stud having a screw hole with a top opening, the bottom of the screw being threadedly connected to the screw hole, the bottom of the stud being fixed to the base, and the top of the screw being axially fixed and radially rotatable connected to the inner cylinder and protruding from the top of the inner cylinder.

[0009] More preferably, a connecting plate is fixed inside the cavity of the inner cylinder, and the top of the screw passes through the connecting plate to form an axially fixed and radially rotatable connection with the connecting plate.

[0010] More preferably, the connecting plate is fixed to the inner column by three bolts that pass through the top of the inner column.

[0011] More preferably, an outwardly folded receiving flange is provided at the bottom of the inner column, and the sleeve is fixed by the receiving flange after being fitted onto the outer wall of the inner column.

[0012] More preferably, the sleeve is a plastic tube. In some embodiments, the plastic tube may be replaced with a sleeve made of other materials that are currently known or may be made in the future.

[0013] More preferably, the sleeve has a pre-formed connection hole, and the receiving flange has a through hole corresponding to the connection hole. A bolt passes through the through hole to lock the sleeve onto the inner column.

[0014] More preferably, at least two top posts are installed on the base, and when the inner column retracts into the outer column so that the top plane of the inner column is flush with the top plane of the outer column, the bottom of the inner column abuts against the top post.

[0015] More preferably, the anti-rotation post is installed at the outer edge of the base and the stop ring, and an installation groove is opened at the outer edge of the base and the stop ring. The upper and lower ends of the anti-rotation post are respectively installed in the corresponding installation grooves and locked and fixed by screws or bolts.

[0016] More preferably, the anti-rotation post is composed of a first grooved component and a second grooved component that interlock with each other. The upper end of the first grooved component is embedded in the mounting groove of the abutment ring and locked in place by a first screw. The lower end of the first grooved component is fixed to the plate surface of the base by an outwardly turned mounting ear and a second screw. The second grooved component is embedded in the first grooved component, and the two outer sides of the second grooved component are in contact with the two inner sides of the first grooved component to enhance the structural strength of the entire anti-rotation post. The lower end of the second grooved component is embedded in the mounting groove of the base and fixed to the base or the first grooved component by a third screw. The second grooved component is lower than the first grooved component to expose the mounting position of the first screw.

[0017] More preferably, a cover plate for covering the mounting groove is installed on the abutment ring, and the cover plate is locked and fixed to the abutment ring by screws or bolts.

[0018] The technical solution provided by this utility model has at least the following technical effects or advantages.

[0019] I. Compared to existing assembly processes that require welding at least two guide rings and at least two guide pillars, this invention only requires fitting the sleeve onto the outer wall of the inner pillar and fixing it to the receiving flange at the bottom of the inner pillar. This makes assembly more convenient and efficient. Actual production verification shows that the average assembly efficiency can be increased to 10 manual lifting pillars per person, effectively reducing production costs. Furthermore, the use of a manual lifting device instead of the traditional hydraulic lifting mechanism enables manual lifting of the pillars, resulting in a simpler structure and lower application costs.

[0020] Second, by installing at least two top columns on the base, when the inner column retracts into the outer column so that the top plane of the inner column is flush with the top plane of the outer column, the bottom of the inner column abuts against the top column; this can ensure the stability of the inner column when it descends and retracts, avoid the tilting of the inner column caused by stepping, and at the same time leave enough drainage space at the bottom of the outer column to facilitate the drainage of accumulated water.

[0021] Third, since the anti-rotation column is installed on the outer edge of the base and the blocking ring, and the anti-rotation column adopts the first groove-shaped part and the second groove-shaped part that interlock with each other, it can be assembled by screws or bolts, and the assembly is convenient and quick, and the structure has high strength after assembly.

[0022] Other beneficial effects or technical advantages of this invention will become more apparent in the following description or practice. Attached Figure Description

[0023] Figure 1 The diagram shown is a structural schematic of the manual lifting column provided by this utility model.

[0024] Figure 2 The figure shown is a cross-sectional view of the manual lifting column provided by this utility model.

[0025] Figure 3 The diagram shown is an exploded view of the manual lifting column provided by this utility model.

[0026] Figure 4 The diagram shows the assembly schematic of the anti-rotation column.

[0027] Figure 5 As shown Figure 4 A schematic diagram of its breakdown.

[0028] Figure 6 The diagram shown is a schematic of screw rotation.

[0029] Figure 7 As shown Figure 6 A magnified view of a portion of the image. Detailed Implementation

[0030] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings, making the technical solution and beneficial effects of this utility model clearer and more explicit. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0031] Additional aspects and advantages of this invention will become apparent in the description that follows, or may be learned by practice of this invention.

[0032] Reference Figures 1-3 As shown, a manually operated lifting column includes a base 1, an outer column assembly 2, an inner column assembly 3, and a manual lifting device 4. The outer column assembly 2 and the manual lifting device 4 are both fixed to the base 1. The outer column assembly 2 includes an outer column cylinder 201 with a top opening, which is buried underground. The inner column assembly 3 includes an inner column cylinder 301 with a bottom opening, which is movably embedded in the outer column cylinder 201. The manual lifting device 4 is disposed in the inner column cylinder 301 and is used to push the inner column cylinder 301 to move up and down along the length direction of the outer column cylinder 201.

[0033] Compared with the prior art, one of the main innovations of this utility model is that: a sleeve 5 is installed at the bottom of the inner column 301 and fits against the inner wall of the outer column 201, and the sleeve 5 is used to ensure the stability of the lifting and lowering of the inner column 301; an anti-rotation post 6 is provided between the abutment ring 202 of the outer column 201 and the base 1, and a notch 501 is provided on the sleeve 5 to cooperate with the anti-rotation post 6, and the cooperation between the notch 501 and the anti-rotation post 6 is used to realize the anti-rotation of the lifting and lowering of the inner column 301.

[0034] The second major innovation lies in the use of a manual lifting device 4 instead of the traditional hydraulic lifting method. The manual lifting device 4 includes a screw 401 and a stud 402 assembled together. The stud 402 has a threaded hole with an opening at the top. The bottom of the screw 401 is threadedly connected to the threaded hole, and the bottom of the stud 402 is fixed to the base 1. The top of the screw 401 is axially fixed and radially rotatable to the inner cylinder 301, protruding from the top of the inner cylinder 301. Thus, by rotating the screw 401, the screw 401 can be screwed in and out relative to the stud 402, thereby achieving the purpose of raising and lowering the inner cylinder 301. The rotation method of the screw 401 can be any known wrench rotation, such as... Figure 6 , Figure 7 As shown, the top of the screw 401 is set in a hexagonal column shape, and the screw 401 can be rotated in both directions using the corresponding Allen wrench 9. Of course, the specific structural form of the manual lifting device is not limited to the screw and stud structure exemplified above. Any other existing or future known structural forms of manual lifting devices that can be applied to lifting columns are within the protection scope of this utility model.

[0035] Compared with the existing technology CN108396680A, this utility model has the following two technical advantages: 1) Compared with the existing assembly process of welding at least two guide rings and at least two guide columns, this utility model only requires fitting the sleeve 5 onto the outer wall of the inner column 301 and fixing it to the receiving flange 302 at the bottom of the inner column 301, making assembly more convenient and efficient. Actual production verification shows that the average assembly efficiency can be increased to 10 manual lifting columns per person, effectively reducing production costs. 2) The manual lifting device 4 replaces the traditional hydraulic lifting mechanism, enabling manual lifting of the column, resulting in a simpler structure and lower application costs.

[0036] In this embodiment, the specific connection method between the top of the screw 401 and the inner cylinder 301 is as follows: a connecting plate 403 is fixed inside the cavity of the inner cylinder 301, and the top of the screw 401 passes through the connecting plate 403 via a bearing to form an axially fixed and radially rotatable connection; the connection and assembly are convenient. In some embodiments, the bearing may also be omitted, and it is not limited to this embodiment.

[0037] In this embodiment, the connecting plate 403 is preferably fixed to the inner column 301 by three bolts passing through the top of the inner column 301, which makes assembly more convenient. Obviously, those skilled in the art can also use other existing known or future achievable fixing methods, such as welding, to connect and fix the connecting plate 403 and the inner column 301 according to different actual needs, and are not limited to this embodiment.

[0038] In this embodiment, the sleeve 5 is preferably a plastic tube, and preferably has a pre-formed connection hole on it. The receiving flange 302 has a through hole 304 corresponding to the connection hole, and a bolt 303 passes through the through hole 304 to lock and fix the plastic tube to the inner column 301. Obviously, the material of the sleeve 5 and the specific connection and fixing method between the sleeve 5 and the inner column 301 are not limited to the examples above.

[0039] Combined Figure 2 and Figure 3 As shown, at least two top posts 7 are also installed on the base 1. When the inner column 301 retracts into the outer column 201 so that the top plane of the inner column 301 is flush with the top plane of the outer column 201, the bottom of the inner column 301 abuts against the top post 7. This ensures the stability of the inner column 301 as it descends and retracts, avoids tilting of the inner column caused by stepping, and also leaves enough drainage space at the bottom of the outer column 201 to facilitate the drainage of accumulated water.

[0040] Combination Figure 4 , Figure 5 As shown, the anti-rotation post 6 is installed on the outer edge of the base 1 and the blocking ring 202. An installation groove is opened on the outer edge of the base 1 and the blocking ring 202. The upper and lower ends of the anti-rotation post 6 are respectively installed in the corresponding installation groove and locked by screws or bolts. The installation is convenient and quick.

[0041] In this embodiment, the anti-rotation post 6 is preferably composed of a first grooved component 601 and a second grooved component 602 that interlock with each other. The upper end of the first grooved component 601 is embedded in the mounting groove of the abutment ring 202 and locked in place by a first screw 801. The lower end of the first grooved component 601 is fixed to the plate surface of the base 1 by an outwardly turned mounting ear and a second screw 802. The second grooved component 602 is embedded in the first grooved component 601, and the two outer sides of the second grooved component 602 are in contact with the two inner sides of the first grooved component 601 to enhance the structural strength of the entire anti-rotation post 6. The lower end of the second grooved component 602 is embedded in the mounting groove of the base 1 and fixed to the base 1 or the first grooved component 601 by a third screw. Furthermore, the second grooved component 602 is lower than the first grooved component 601 to expose the mounting position of the first screw 801. In this way, the installation of the entire anti-rotation post is more convenient and reliable.

[0042] To avoid the exposure of gaps caused by the installation slot, in this embodiment, it is preferable to also install a cover plate 203 on the abutment ring 202, and the cover plate 203 and the abutment ring 202 are locked and fixed together by screws or bolts.

[0043] It should also be noted that in the description of this utility model, directional terms such as "center", "horizontal", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0044] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can also refer to a mechanical connection; they can refer to a direct connection or a connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0045] In this utility model, unless otherwise specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "below," and "over" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Above," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0046] Based on the above description of the structure and principle, those skilled in the art should understand that this utility model is not limited to the specific embodiments described above. Improvements and substitutions made using techniques known in the art based on this utility model all fall within the protection scope of this utility model, which should be defined by the claims and their equivalents. Parts not described in the specific embodiments are all prior art or common knowledge.

Claims

1. A manually operated lifting column, comprising a base (1), an outer column assembly (2), an inner column assembly (3), and a manual lifting device (4), wherein the outer column assembly (2) and the manual lifting device (4) are both fixed on the base (1), the outer column assembly (2) comprises an outer column tube (201) with a top opening, the inner column assembly (3) comprises an inner column tube (301) with a bottom opening, the inner column tube (301) is movably embedded in the outer column tube (201), and the manual lifting device (4) is disposed in the inner column tube (301) for pushing the inner column tube (301) to move up and down along the length direction of the outer column tube (201); characterized in that, A sleeve (5) is installed on the inner cylinder (301) and fits against the inner wall of the outer cylinder (201). The sleeve (5) is used to ensure the stability of the lifting and lowering of the inner cylinder (301). An anti-rotation post (6) is provided between the abutment ring (202) of the outer cylinder (201) and the base (1). A notch (501) is provided on the sleeve (5) to cooperate with the anti-rotation post (6). The cooperation between the notch (501) and the anti-rotation post (6) is used to realize the anti-rotation of the lifting and lowering of the inner cylinder (301).

2. A manually operated lifting column according to claim 1, characterized in that, The manual lifting device (4) includes a screw (401) and a stud (402) assembled together. The stud (402) has a screw hole with an opening at the top. The bottom of the screw (401) is threaded to the screw hole. The bottom of the stud (402) is fixed to the base (1). The top of the screw (401) is axially fixed and radially rotatable connected to the inner cylinder (301) and protrudes from the top of the inner cylinder (301).

3. A manually operated lifting column according to claim 2, characterized in that, A connecting plate (403) is fixed inside the cavity of the inner cylinder (301), and the top of the screw (401) passes through the connecting plate (403) to form an axially fixed and radially rotatable connection with the connecting plate (403).

4. A manually operated lifting column according to claim 3, characterized in that, The connecting plate (403) is fixed to the inner column (301) by three bolts that pass through the top of the inner column (301).

5. A manually operated lifting column according to claim 1, characterized in that, The bottom of the inner column (301) is provided with an outwardly folded receiving flange (302). The sleeve (5) is fitted onto the outer wall of the inner column (301) and then fixed by the receiving flange (302).

6. A manually operated lifting column according to claim 5, characterized in that, A connecting hole is pre-formed on the sleeve (5), and a through hole (304) corresponding to the connecting hole is provided on the receiving flange (302). A bolt (303) passes through the through hole (304) to lock the sleeve (5) onto the inner column (301).

7. A manually operated lifting column according to claim 1, characterized in that, At least two top posts (7) are installed on the base (1). When the inner column (301) retracts into the outer column (201) so that the top plane of the inner column (301) is flush with the top plane of the outer column (201), the bottom of the inner column (301) abuts against the top post (7).

8. A manually operated lifting column according to claim 1, characterized in that, The anti-rotation post (6) is installed on the outer edge of the base (1) and the stop ring (202). An installation groove is opened on the outer edge of the base (1) and the stop ring (202). The upper and lower ends of the anti-rotation post (6) are respectively installed in the corresponding installation groove and locked by screws or bolts.

9. A manually operated lifting column according to claim 8, characterized in that, The anti-rotation post (6) is composed of a first grooved part (601) and a second grooved part (602) that interlock with each other. The upper end of the first grooved part (601) is embedded in the mounting groove of the abutment ring (202) and locked and fixed by a first screw (801). The lower end of the first grooved part (601) is fixed to the plate surface of the base (1) by an outwardly turned mounting ear and a second screw (802). The second grooved part (602) is embedded in the first grooved part (601) and the two outer sides of the second grooved part (602) are in contact with the two inner sides of the first grooved part (601) to enhance the structural strength of the entire anti-rotation post (6). The lower end of the second grooved part (602) is embedded in the mounting groove of the base (1) and fixed to the base (1) or the first grooved part (601) by a third screw. The second grooved part (602) is lower than the first grooved part (601) to expose the mounting position of the first screw (801).

10. A manually operated lifting column according to claim 8, characterized in that, A cover plate (203) for covering the mounting groove is installed on the abutment ring (202), and the cover plate (203) and the abutment ring (202) are locked and fixed together by screws or bolts.

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